Abstract: A method and an apparatus for processing food into a tubular shape is provided in which a die for processing the food includes a guide plate having a material outlet and a cylindrical feed pin having a water outlet at its center co-axially housed in the material outlet. The guide plate and feed pin cooperatively define a ring-like opening. Food material is extruded out of the ring-like opening in a tubular shape. Simultaneously, hot water is expelled out of the water outlet of the feed pin, flows into and fills a hollow inside the tubular food material. The hot water in the hollow prevents the wall of the tubular food material from collapsing and also accelerates coagulation of the food material. Food material is thus continuously processed into a tubular shape. An extruding die for performing the described method is also provided.

Abstract: The present invention relates to a nib for a forming tool of bolt head or nut, wherein a nib 7 to be used for a tool comprises a segment combination nib 2 composed of a plurality of nib segments 1, and a regular polygonal hole 6 is formed at the inside of the nib. Regular polygon is formed also at the outside of the segment combination nib 2, and a bush 3 having the same shape as the nib 2 is fitted thereto so as to reinforce the nib 7. Moreover, stress absorbing hole 9 is formed on edge portion inner circumference of the bush 3 or outer surface of the segment combination nib 2. Since the stress absorbing hole 9 serves to absorb stress concentration applied to the nib segments 1, the nib 7 is not liable to flaw in comparison to prior art and stopping of the machine for exchange of the nib 7 is scarcely needed. Accordingly a forming tool with effect of improving the productivity can be provided.